reusing rear Ubolt??

I'm going to take the wedges out of my rear to rotate my pinion down a bit...this should make the driveshaft angles match a little better. Right now I have more angle at the TC, and less at the pinion.

I've read occasionally about reusing U bolts....that it's not a good idea, etc. Does this apply to just the front or what.

I'm chasing a gremlin vibe that comes in at 60mph, and goes away at 70mph...it's not bad, just annoying. It is Not the tires (BFG AT's 33" on stock Rally's, or 33" MT on 10" Rally's)

Fresh rebuild on the 241, fresh rebuild on the stock style slip yoke driveshaft. 3" Skyjacker lift, checked out the 12B pinion bearing, etc. and found no mechanical issues. That leaves the DS angle....hence the U bolt question.

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